Cain, who was in third place in last weekend's Des Moines Register poll of Iowa caucus-goers, is reminding people of Bachmann's geographical gaffe over where the actor was born (she confused him with John Wayne Gacy, who hailed from her hometown of Waterloo):

Republican presidential candidate Herman Cain will campaign this weekend in Winterset, birthplace of actor John Wayne.

Cain, an Atlanta native and former chief executive of the Godfather’s Pizza chain, will also hit one of the pizza restaurants in Iowa – on John Wayne Drive in Indianola.

Earlier this week, Bachmann, while underscoring her Iowa roots as a selling point, told Fox News, “John Wayne was from Waterloo, Iowa. That’s the kind of spirit that I have, too.”